arp(1M)                                                             arp(1M)

NAME
     arp - address resolution display and control

SYNOPSIS
     arp hostname

     arp -a

     arp -d hostname

     arp -s hostname MACaddress [temp] [pub] [trail]

     arp -f filename

DESCRIPTION
     The arp program displays and modifies the Internet-to-MAC address
     translation tables used by the address resolution protocol [see
     arp(7)].

     The MAC identifies the relevant network interface and applies for
     Ethernet, FDDI, ATM (LAN emulation) and Token Ring.

     With no flags, the program displays the current ARP entry for
     hostname. The host may be specified by name or by number, using Inter-
     net dot notation.

OPTIONS
     -a   Display all of the current ARP entries by obtaining the table
          from the kernel. In the table output, permanent entries are
          marked with the word permanent, public entries are marked
          published and entries with IP trailer encapsulation are marked
          trailers. These three markings can appear in any combination or
          may even not appear at all. If none of the three markings
          appears, then the entry is temporary and non-public and does not
          have IP trailer encapsulation.

     -d   Delete an entry for the host called hostname. This option may
          only be used by the superuser.

     -s   Create an ARP entry for the host called hostname with the MAC
          address MACaddress. The MAC address is given as six hexadecimal
          bytes separated by colons. The entry will be permanent unless the
          word temp is given in the command. If the word pub is given, the
          entry will be published, for instance, this system will respond
          to ARP requests for hostname even though the hostname is not its
          own. The word trail indicates that trailer encapsulations may be
          sent to this host. Reliant UNIX does not support IP Trailer
          Encapsulations.







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arp(1M)                                                             arp(1M)

     -f   Read the file named filename and set multiple entries in the ARP
          tables. Entries in the file should be of the form

               hostname MACaddress [temp] [pub] [trail]

          with argument meanings as given above.

SEE ALSO
     ifconfig(1M), arp(7).













































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